Thermostat-controlled heater.



J. F. WILLIAMS. THERMOSTAT CONTROLLED HEATER.

APPLICATION IILED 001222, 1907.

Patented Apr. 20, 1909.

2 SHEETS-SHEET 1.

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APPLICATION FILED ()(JT.22 1907.

Patented Apr. 20, 1909.

2 SHEETS-SHEET 2.

ATTI li rnr enric v l was sTATEs JOHN F. WI1SLIAMSQOF'SANDUSKY, OHIO.

THERMOSTAT-CONTROLLED HEATER. v

To all whom it may concern:

Be itknown that I, JOHN F. WILLIAMS, residing at Sandusky, in the countyof Erie and State of Ohio, have invented a certain new and useful'lm-provement in Thermostat-i.

Controlled Heaters, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings.

This invention relates to water heating apparatus 'WllGIGIIlthe flowof/gas or similarv fluid combustible to a burner" is controlled by thetemperature of the water in acontainer or receptacle and moreespeciallyto an apparatus 'of this kind wherein the containerfor the heated wateris'separate from the rece tacle wherein the water is heatedg w'lheobjects of my invention are to improve the operation of apparatus of thiskind, to so construct and arrange the thermostatwhich operates the valveby which the fluid fuel is supplied to the burner that the valve shallbe may be conveniently regulated. at will to my thermostat thereto,

adapt the thermostat for varying temperatures of water. V 7

Generally speaking, the invention may be defined as consisting of thecombinations of elemen ts, for the purposes specified, embodied in theclaims hereto annexed and illustrated in the accompanying drawings,wherein.

Figure 1 represents view taken through a water container having theheaterffor the water in said container being shown in elevation yFig. 2represents a sectional view of a modified form of the inventionillustrated in- Fig. 1; Fig. 3 represents a further modification of myinvention, the container being shown as a manifold connected with aninstantane-ous water heater Fig. 4 represents an enlargedsectionaldetail of the manifold and the thermostat; Fig. 5 represents a view,partlyin section and artly in elevation, of my thermostat; and Fig. .6representsan enlargedsectional view of saidthermostat. Describing theparts now by reference characters,'1 represents a receptacle or corn ISpecification of Letters Patent. Application filed October 22,- 1907.Serial No. 398,564.

a vertical sectional,

coeflici'ent or expansion and a Patented April 20, 1909.

tainer fwherefr'om hot water may be drawn to anydesired point of use. IThe receptacle or container shoWn-inFig. 1 isa stand boiler providedwith an inlet connection 2 for cold water-and an outlet connection 3 forhot water 4 denotes the heater, separatefrom the stand boiler, by meansof which the Water in said boiler may be heated. This heater comprisesfareceptacle for water, said receptacle eing illustrated as a coil 5,receiving water I from thebottom of the standboiler through v pipe 6 anddischarging the heated water into the top of the boiler through pipe 7.'lhe coil 5 is provided with a burner 8 for heating the same, saidburner receiving its supplyfrom a pipe 9 located at one side of theboiler 1.

0 denotes a casing connected into pipe 9.-

Thls casing, as will appear more particularly the top with an inletconnection 11 and at the bottom with anoutlet connection 12;

The lower end of inlet connection 11 is faced oif withih the casing toprovide a circular valve seat 13, with which there cooperatesacylindrical valve 14 provided with a head 15. This head is provided witha guide stem 16 east therewith and adapted to be centered nection 11.

and guided by a spider '17 within inlet con- ,by reference to Figs. 5and 6, is provided at 18- denotes a screw which is threaded into I thecentral portion of head 15 and which serves as a means for operatlng thevalve.

Casing 10 1s elongated and tape'rs'somewhat toward. the rear or outerend thereof,

such end being closed by means of a head 19 threaded thereinto andprovided with a central bore 20', for a purpose to be describedhereinafter. casing 10 is r'educed and provided with an external thread21 for the reception. of a tubei22.. This tube, in Fig, 1, is shown asprojecting within the receptacle 1 and extending horizontallythereacross, forming Water tight joints with the opposite sides of thecontainer or receptacle. The inlet connection 2 for cold watercommunicates directly with the end of said tube whi'clris' oppositecasing 10 and pipe 9. In the form of my invention shown in Fig. 1,-tube22 is provided with ports 23 and 24 for a purpose to be explainedhereinafter:

The thermostat proper comprises a tube .25 of metal, such as copper,having a high The front or. inner end of outer end thereof.

i'-- similar metal having a relatively low coefficient of expansionconnected at one end to the tube-25 and extending through the inner orfrontend of casing to the rear or Tube 25 is conveniently fitted withinthe nipple 21 at the inner end of casing 10. To prevent sagging o'rwarp-"- ing of rod 26, guides 27 may be provided within the casing forsaid rod. The operating lever for transmitting the movements of rod26Ito"valve 14 comprises a long armv 28, and-.a:shorf ,arin, said shortarm com.- prising two: angularly disposed members 29 and 30, one member29 being substantiallyparallel 'witharrn 23 and the other being arrangedsubstantially at right, angles thereto and provided with an internalthread by means of which thelever is threaded onto a screw:31. The leveris pivoted to the casing at the junction 32 of the long andshortarms bya pin 33. Arm 29 is engaged by aspiral spring 34,- which is carriedwithin ahollow boss 35 projecting from the casing 10, said boss being'closed by means of-a nut 36. 'The free endof arm28 is provided with afork '37,

which is adapted to be applied to the screw 18, thespiral spring 3801isaid screw tending bore 20 of head 19.

with a sleeve 42 which receives the outer end to holdisaid fork, inengagement with the. head 15 of valve 14. Screw "32 is provided with aplurality of radial pins 39 adapted to be engaged by pins projectingfrom the head of a bolt 41, which extends through-the Head 19 isprovided 43 of bolt 31 and also, receives the packing 44 around saidbolt, said packing being retained in'place by-a washer 45 threadedintosaid sleeve. A spiral spring 46 is interposed between head 43 and washer45.

In assembling, the lever, comprising members .28, 2.9 and 30, isinserted into the open rear or outer end of casing 10, with screw 31 inplace.

,gagement with screw 18, pivot pin, 33 is inserted in place and spring34 is placed within The fork 37 is brought into en- .boss 35. The head19 is then secured in .The operator applies a screw-driver,to the place.The end of screw 31 will be in substantial engagement with end of rod26. Suppose it is desired to have the valve 15 close at a lowertemperature than before.

end of bolt 41, pushes inwardly until pins 40 engage pins 39 and turnsthe bolt in the proper direction to move the screw 30 outwardly. Thispermits spring 34 to rockthearm 28 upwardly on pivot 33, at an earl erpoint in the operation of the device and the valve 14 closes when thewater in the container is at a lower maximum temperaturethan before.

It be observed that, in the forms of my invention disclosed in Figs. 1and 2, the tube which surrounds thetherinostat is arranged the body ofthe container. ,water: entering 2 flows horizontally along By rotatingbolt 41 in the :reverse direction, the opposite result may be obtained.

horizontally and' isin free communication with the interior-of thecontainer; In Fig. 1, the tube 22 through which cold water is admittedto the container 1 is provided with a port 24in the bottom thereof and aport 23 in the top thereof. As hot'water is drawn from container 1 coldwater coming in through inlet 2 immediately comes into contact withand'contractsthe copper tube 25 and opens the gas valve, supplying gasto the burner 8,

said burner, when the valve 14 is closed, having a pilot supply throughby-pass 47.

pipe 3, the thermostat acting tov open the. gas

valve whena faucet connected with pipe 3 is openedand to close the gasvalve when the faucet is closed. The same result will be accomplished bythe construction shown in Fig, 2,- -wherein the inlet 2 to the container1 1 is connected between the gas pipe 9 and lnthis case, coldthefthermostat tube 25 'at once contracting said tube and c'ausingtliegas valve to open. As' -'soon as the faucet is closed by means of whichwarm water. is drawn from. 1, the warm water within 1' is free to enterthe horizontal pipe 22 -through the open end .thereof and quicklyexpands the thermostatic tube 25 and closes the gas valve.

In the modification of my invention shown in Fig. 3, the gas supply 9 isconnectcdwith a burner 8 of'a heater of the instantaneous type, saidheater comprising a coil 18 receiving cold water at the lower end anddischarging hot water from the 1.11)1)(,1;(11 l thereof into a containerl This container may be made iii the shape of a manifold, as shown, andis provided with an outlet connection 50 through which the hotwater fromthe coil below is supplied to the point of use. The same form ofthermostat is employed with this heater as in the case with thereceptacles shown in Figs. 1 and ,2, and the cold water supply 2 isconnected into the pipe 22 in the same manner as shownin Fig. 2.

Pipe 22 in this case, however, extends entirely across the container 1from one end to the other thereof and discharges directly into the pipe5l which communicates with the bottom of the coil 48. In all of thearrangements, the cold water is caused to flow for substantially thefull length of the thermostatic tube 25 and the thermostats are arrangedin a horizontal position, whereby they are subjected throughout theirextent tube, as said tube is arranged above the bot tion, with thedifferent parts thereof ing the water in said supplying fluid fuel to insaid pipe, a thermostat comprising a hori-' container, thereby insuringa much quicker action in closing than would be the case were thethermostat arranged in a vertical )osisub ect ed to differenttemperatures of the water.

. By the arran ement shown in Fig. 1, any inconsiderable i low of coldwater into the container 1,'"as in case of a leaky faucet, will notcause the gas valve to be opened, as the cold water will not strike thethermostat tom of the tube 22. In the arrangement shown inFigs. '2, 4, 5and 6, a shield maybe prevent, the impingement of waprovided to ter ontop of the thermostatictube. Such and at 52 in Fig.4. x

My invention as described above, while shields are indicated at 52 inFigs. 2, 5 and 6 adapted to meet all the incidents of use to which itmay be subjected.

' I claim: i

1. In a waterheater, the combination of a container for hot water, aburner for heatcontainer, a pipe for said burner, a valve zont'allyarranged expansible member within said container, connections betweensaid member and said valve, and a cold Water supply tube surroundingsaid member within saldcontainer and extending entirely across the same,and connected to opposite sides thereof, substantially as specified.

2. a container for hot water, a burner for heating the water in saidcontainer, a fluid fuel supply pipe leading to said burner, a valve in Isaid pipe, a thermostat comprising a horithereof, and an inlet forzontally arranged expansible member within said container, connectionsbetween said member and said valve, tubing surrounding said member andextending entirely across, said container, said tubing beingpiovidedwith ports located at the top and bottom cold water connected with saidtube, substantially as specified.

3. In a water heater, the combination of a container fQI hot water, aheater for the water in said container, a burner for said heater, afluid-fuel supply pipe for said burner located alongside said container,a valve in said pipe, a thermostat comprising a horizontally-arrangedexpansible -member located within said container and. having one endprojecting through the container and connected with said valve, and.means for simple of construction, is durable and par-' In a waterheater, the combination ofwith said tube '0f said casing,

- fuel to said "burner,

to be lnserted into a water of the container opposite said gas valve,said tube being provided with a discharge port. for cold water and witha temperature-equalizing port, substantially as specified. 4. In a waterheater, the combination of'a container for hot water,a burner forheating the water therein, a pipe for supplying,- ;fiuid a valve in saidpipe, a thermostat .coin rising a horizontally arranged expansibl dmember within said container, a section of tubing surrounding andinclosing said expansible member and located within said container andprovided with portsin the top and bottom thereof, and a cold watersupply'connected to the said tubing, substantially as specified,

5. In a water heater, the combination of awater receptacle, a thermostattherefor, said thermostat comprising an expansible tube adapted to beinserted into the water receptacle and a casing outside. of saidreceptacle, said casing having an inlet and an outlet connection forfluid fuel, a rod connected and extending longitudinally a valve in saidcasing, a lever for operating said valve, the said lever comprising apair of arms extending substantially parallel with each other, a ri idconnection between said arms, a screw .t readed into said rigidconnection and adapted to abut against said rod, and a spring adaptedto'engage one of said arms to force the other into engagement with thevalve, substantially as specified. v

i 6. Ina water heater, the combination of a water receptacle,athermostat therefor 06mprisinga tube of expansible, material adapted tobe inserted into av water receptacle, arod connected with said tube andprojecting outside of said receptacle, a casing surrounding the outerend of said rod, said casing being provided withan inlet and outletconnection for fluid fuel, avalve Within said casing controlling theflow of fluid through the inlet connection, and a lever for operatingsaid valve, said lever comprising a long-arm, the free end of ichengages said valve, and ashort arm rigid with the long arm and arrangedat an angle with respect to said long arm and adapted to be operated bysaid rod, substan--11.5

' tially as specified.

n a water heater, the combination of a water receptacle, a thermostattherefor comprising a tube of expansible material ad'aptedl receptacle,a rod 120. connected with said tube andprojectingoutside of saidreceptacle, a casing surrounding the outer end of said rod, said casingbeing provided'with an inlet and an outlet connection; for fluid fuel, avalve within said casing controlling the flow of fluid-through the inletconnection, and a lever for operating said valve, said lever comprisinga long arm, the free end of which engages said valve, and a short arm.rigid withthe long arm and arranged: at an 13a &

angle with respect to said long arm, and an adjustable connection.between said rod and said short arm, substantially as specified.

8. In a water heater, the combination of a Water receptacle, athermostat therefor comprising a tube of expansible material adapted tobe insertedinto a waterreeeptacle, a casing outside of said receptacle,said casinghavingan inlet and an outlet connection for fluid fuel, avalve adapted to control the flow of fluid fuel through said casing,means for operating said valve, said means comprising a lever having along arm the free end of which is adaptedto engage said valve and ashort arm rigid with the long arm, anadjustable connection between saidshort arm and said rod, and a spring tending to retain the free end ofthe long arm in contact with the valve, substantially as specified. i

9.'*'In a water heater, the combination of a waterrecepta'cle, athermostat therefor comprising a tube of expansible material adaptedtofbe inserted into {the water receptacle, a

rod connected with said tube and projecting having a second arm arrangedto be oper' ated by sald rod.

10. In a Water heater, thecombination of a .Water receptacle,athermostat therefor comprising a tubular member of'expansible ma terialadapted to be inserted. into the water receptacle, a casing outside saidreceptacle,

- a rod connected with said tube and projecting into said casing, saidcasing being provided with an inlet and an outlet for fluid fuel, avalve in said casing arranged to control the flow of fluid fueltherethrough, a lever'for operating said valve, said lever com.-

prising a long arm and an angular short arm rigidly connected thereto, aspring in said casing adapted to engage one member of the short arm, andan adjustable connectionbetween the other member of the short arm andthe rod, substantially as specified.

11. In a water heater, the combination 'of a water receptacle, athermostat"therefor comprising a tube of expansible material adapted tobe inserted into a receptacle, a

casing outside of said receptacle, a rod connected .with said tube andprojecting into said casing, said casing having in the upper portionthereof an inlet for fluid fuel, a vertically movable valve within thecasing controlling said inlet, a lever for operating said valve, saidlever comprising a long arm extending.longitudinally of the casing, saidlong arm having its free end in engagement with said valve,and a shortarm extending substantially parallel with the long arm and connectedthereto, a hollow boss in said casing adjacent to the short arm, and aspring in .said boss engaging said short arm,

substantially as specified;

12. In a water heater, the combination of a water receptacle, athermostat therefor comprising ,a' tubular. cxpansible member adapted tobe fitted to a receptacle, a casing outside of said rece itaclc, a rodconnected. with said tubular member and extending longitudinally of saidcasing, said casing being provided with an inlet for fluid fuel and withan outlet, the rear or outer end of said casing being provided with aremovable head, a vertically movable valve controlling the flow of fluidthrough the casing, a lever adapted to be inserted through the rear orouter end of the casing, said lever having an arm extendinglongitudinally of the casing and adapted to engage said valve and havinga downwardly projecting short arm, a screw threaded into the downwardlyprojecting short arm and adapted to engage said rod, and means carriedby said head adapted to engage said screw for rotating the same andthereby adjusting the position of the lever with respect to the ViIlXGand the rod, substantially as specified.

13. In a water heater, the combination of a water receptacle,. athermostat therefor comprising a tubular member of expansible materialadapted to be inserted into a receptacle, a-casing outside ofjsaidreceptacle, a rod connected with said tube. and. projectinglongitudinally of said using, said casing having aninlet connection inthe upper portion thereof and an outletconnection, a *alvc controllingsaid inlet connection, and means for operating said valve, said meanscomprising a lever pivoted adjacent to the rear or outer endof thecasing and having an arm adapted to engage said valve and having asecond arm arranged transversely of said casing and provided with ascrew threaded therethrough and adapted to e11- gage the outen end ofSflMllOd, and .11 ans for operating said screw from the outside of saidcasing, said means comprising a sleeve projecting from the rear end ofthe rasing.

an operating member reciprorablc in said sleeve and having at its innerend means for engaging said screw, and a spring arranged to normallyhold said member out of contact with said screw, substantially asspecified.

14. A thermostat for water heaters comprising a tube of ex ansiblcmaterial adapted to be inserted into t is water reccptacle'aiul a casingoutside of said receptacle, a rod connected at its inner end to .saidtube and projecting through said casing nearly to the rear end thereof,said casing being provided with llll an inlet connection in the uppereridthereof and with an outlet connection, an upwardlyseating valve forsaid inlet connection, a'lever' within the lower portion of the casing.and

i substantially as s ecified.

adapted to engage the horizontal branch, and means whereby saidscrew-may be adjusted,

15. In a water eater, the combination of a water receptacle, a'thermostat therefor ing longitudinally of saidcasing, sai having aninlet connection and an outlet concomprising a tubular member ofex'pansible material adapted to be inserted into a receptacle, a casingoutside of said receptacle,

a rod connected with said tube and (projectcasing nection, a valvecontrolling said inlet connecnection, and means for operating .saidvalve, said means comprising a lever ivoted adjacent to the rear orvouter end of t e casing and having an arm adapted toengage said valveand having. a second arm arran ed transversely of said casingand provied with a screw threaded therethrough and ada ted to r'ocable operatingmember projecting through engage the outer end of said rod, sai screwbeing provided with projections, and means for operating said screw fromthe outside of said casmg, said means comprismg a -rec1pinner end meansforenga ingsaid tions, and a spring arrange to normal y hold therear endof the casing and having at its I rojecsaid member out of contact withsaid screw,

substantially as s ecified.

16. In a water eater, the combination of a container for hot water, afluid fuel burner arranged to heat'the water in said container,

a'valve for controlling the supply of fluid fuel to said burner, athermostat member in said.

container, connections whereby said member may operate sald valve, andmeansfor supplying water to said container, said means comprisin a tubesection surrounding said .member, t e parts being arran ed to preventthe impingement of the in owing water against the member when the watersupply is limited.

a container for hot Water, a fluid fuel burner arranged to heat thewater in said container,

1 a valve for controlling the supply of fluid fuel to said burner, athermostat comprisin 'a horizontally arranged expansible memIier whichis located within said container, and means for supplying waterlongitudinally of said expansible member, the parts beingar ranged toprevent the impingement of the inflowing Water against the expansiblememher when the water supply is limited, sub

stantially as specified.

In testimony whereof, I hereunto aflix'my signature in the presence oftwo witnesses.

JOHN F. WILLIAMS. Witnesses:

J. B. HULL, BRENNAN B. Wns'r,

a 55' 17. In awater heater, thecombination of

